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HD 278

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Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.
Measurements of binary stars performed at Nice (Second series) Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..467M&db_key=AST
Visual multiples. VII - MK classifications Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.
Stellar groups, VII. The structure of the Hyades group Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960MNRAS.120..540E&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Zincirli Prenses
Sað Açýklýk:	00^h07^m37.40^s
Yükselim:	+52Â°46'22.7"
Görünürdeki Parlaklýk:	7.607
Uzaklýk:	364.964 parsek
özdevim Sað Açýklýk:	-12.5
özdevim Yükselim:	-7.6
B-T magnitude:	8.711
V-T magnitude:	7.699

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 278
TYCHO-2 2000	TYC 3652-752-1
USNO-A2.0	USNO-A2 1425-00188430
HIP	HIP 622

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